TY - JA AU - Ranieri,R. AU - Lister,R.M. AU - Os,B.van TI - Vector relationships of four barley yellow dwarf virus Mexican isolates and four species of cereal aphids found commonly in the Valley of Mexico PY - 1993/// KW - Aphids KW - Barley yellow dwarf virus KW - Metopolophium KW - Mexico KW - Pest insects KW - Rhopalosiphum KW - Vectors T2 - Southwestern Entomologist ER -